PDF Tools
PDF to Fillable PDF JavaScript Overview
Turn a flat PDF form into a fillable one. The converter reads the text and lines of each page, finds the places where a person would write, and adds AcroForm fields there:
- Text fields on writing lines, empty table cells, labeled boxes, comb boxes and date slots such as
__/__/____. - Check boxes and radio buttons on small squares, circles and ballot box characters. Yes and No boxes on one row become a radio group.
- Dropdowns and list boxes where a select is printed with its arrow or its options.
- Signature fields on lines labeled "Signature". Date fields that show their format, such as MM/DD/YYYY, get date formatting in Acrobat and other viewers that run form scripts.
Each field is named after its nearest label, which also becomes its tooltip. A field with no label nearby gets a generic name. The fields have no border and no background, so the page looks exactly as before until someone fills it in. Boxes and circles printed as checked start checked. To fill the new fields with data, use FDF to PDF, and to lock them afterwards, Flatten PDF.
A PDF that already has form fields is returned unchanged, and so is a PDF where nothing to fill in is found. Use PageRange to add fields to some pages only. A password-protected PDF is opened with Password. When fields are added, the result is saved without encryption, and a PDF/A input loses its PDF/A identification, because form fields with scripts are not allowed in PDF/A. Scanned PDFs get no fields, because the detection needs the page's text and vector graphics.
Includes a ready-to-use JS module.
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Process and convert files in seconds with our high-performance cloud infrastructure.
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Our advanced algorithms ensure pixel-perfect and content-accurate file conversions.
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ISO 27001, HIPAA, and GDPR compliant with encrypted file processing.
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Developer Friendly
Comprehensive SDKs and clear documentation for quick and simple integration.
Time-Saving Automation
Automate repetitive document workflows and focus on what matters most.
Customizable Parameters
Fine-tune your automation with these powerful conversion options
File
File Supported formats: .pdfFile to be converted. Value can be URL or file content.
PageRange
String Default: 1-lastSet page range to convert. The parameter understands digits and the keywords even, odd and last. Example: 1,2,5-last.
Password
StringSets the password to open protected PDF.
StoreFile
Bool Default: FalseWhen the StoreFile parameter is set to True, your converted file is written to ConvertAPI’s encrypted, temporary storage and made available via a time-limited secure download URL, valid for up to 3 hours. After this period, the file is permanently deleted.
When StoreFile is False, the conversion runs in memory and the file comes back in the API response: Base64 inside the JSON body by default, or as raw bytes when the request sends Accept: application/octet-stream. Nothing is written to disk or external storage, so only you can access the content.
Step-by-Step Guide
Easily integrate PDF to Fillable PDF using our JavaScript SDK
1. ConvertAPI JavaScript library install
ConvertAPI provides a JavaScript module that allows you to perform a PDF to Fillable PDF conversion with just a few lines of code. First, install the convertapi-js@~1.1 package from npm:
NPM package >
npm i convertapi-js@~1.1
If you are interested in our old version of non-module JavaScript library you can find it here.
2. Authenticate your JavaScript library
Next, obtain your API Token by signing up for a free account. Once you sign up, you'll receive 250 free conversions instantly! Grab your API Token from the account dashboard, and authenticate the ConvertAPI JavaScript library like this:
import ConvertApi from 'convertapi-js'
let convertApi = ConvertApi.auth('api_token')
3. Convert PDF to Fillable PDF using JavaScript in no time!
Once you have your authentication in place, simply copy-paste this pdf to fillable conversion code snippet into your JavaScript project. Convert PDF to Fillable PDF documents using JavaScript with no effort at all!
Integrate within minutes
Easy PDF to Fillable PDF automation using our simple JavaScript SDK
Compatible With all JavaScript Frameworks & Tools
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Highest rated File Conversion API on major B2B software listing platforms: Capterra, G2, and Trustpilot.
"ConvertAPI has been a game-changer for our document automation workflows. Their conversion accuracy and API reliability are unmatched in the industry for over 7 years."
"ConvertAPI is a reliable, cost-effective solution with a proven track record of stability. It has grown significantly in maturity, adopting enterprise-grade practices over the years."
"We've integrated ConvertAPI across our entire document processing platform. The performance is exceptional and the support team is always responsive. Highly recommended!"
Enterprise-Grade Security
We ensure that all document processing is handled securely in the cloud, adhering to industry-leading standards like ISO 27001, GDPR, and HIPAA. To enhance security even further, we can ensure that no files or data are stored on our servers and never leave your country.
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